Statistical Computations: STANDARD Procedure

Standardizing values removes the location and scale attributes from a set of data. The formula to compute standardized values is

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is a new standardized value


is the value of STD=


is the value of MEAN=

x i

is an observation s value


is a variable s mean

s x

is a variable s standard deviation.

PROC STANDARD calculates the mean ( x ) and standard deviation ( S x ) from the input data set. The resulting standardized variable has a mean of M and a standard deviation of S .

If the data are normally distributed, standardizing is also studentizing since the resulting data have a Student s t distribution.

Base SAS 9.1.3 Procedures Guide (Vol. 2)
Base SAS 9.1 Procedures Guide, Volumes 1, 2, 3 and 4
ISBN: 1590472047
EAN: 2147483647
Year: 2004
Pages: 142 © 2008-2017.
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